[November 12, 2012]WILL
COUNTY -- Illinois State Police and the FBI confirmed Friday
that an ongoing investigation into the Stacy Peterson case has
concluded after a weeklong search of the Hammel Woods Forest
Preserve in Shorewood.

State police investigators and FBI agents were at the scene since
Nov 5. The 400-acre preserve is a vast area, and search efforts were
under way using FBI investigative resources, including canines.
Officials declined to confirm details of the investigation for
security reasons.

"The Illinois State Police's top priority is to
preserve the integrity of an investigation, and any comments or
details released during the investigative process could potentially
compromise our efforts," said ISP Zone 3 Commander Michael Cooke.

Law enforcement officials confirmed that no "tip" was provided
and search efforts were part of the ongoing investigation of the
Peterson case. Law enforcement officials also pointed to the unique
opportunity to use FBI resources and for agency cross-training at
the scene.

"Anytime we have the ability to work with other law enforcement
and public safety agencies on specialized investigations, we take
full advantage of the available resources and expertise to
strengthen our techniques and strategies," Cooke added.